Merge pull request #66971 from tnozicka/informer-watcher

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

#50102 Task 2: Add UntilWithSync

**What this PR does / why we need it**:
This is a split off from https://github.com/kubernetes/kubernetes/pull/50102 to go in smaller pieces.

Introduces UntilWithSync based on informer.

**Needs https://github.com/kubernetes/kubernetes/pull/66906 first**
/hold

**Release note**:
```release-note
NONE
```

/priority important-soon
/kind bug
(bug after the main PR which is this split from)

Kubernetes-commit: c4f355a2ad9692f5459541d4e4d94fcbc5f7d946

vendor/k8s.io/api/policy/v1beta1/generated.proto

@@ -151,6 +151,7 @@ message PodDisruptionBudgetStatus {
   // the list automatically by PodDisruptionBudget controller after some time.
   // If everything goes smooth this map should be empty for the most of the time.
   // Large number of entries in the map may indicate problems with pod deletions.
+  // +optional
   map<string, k8s.io.apimachinery.pkg.apis.meta.v1.Time> disruptedPods = 2;
 
   // Number of pod disruptions that are currently allowed.

vendor/k8s.io/api/policy/v1beta1/types.go

@@ -60,7 +60,8 @@ type PodDisruptionBudgetStatus struct {
 	// the list automatically by PodDisruptionBudget controller after some time.
 	// If everything goes smooth this map should be empty for the most of the time.
 	// Large number of entries in the map may indicate problems with pod deletions.
-	DisruptedPods map[string]metav1.Time `json:"disruptedPods" protobuf:"bytes,2,rep,name=disruptedPods"`
+	// +optional
+	DisruptedPods map[string]metav1.Time `json:"disruptedPods,omitempty" protobuf:"bytes,2,rep,name=disruptedPods"`
 
 	// Number of pod disruptions that are currently allowed.
 	PodDisruptionsAllowed int32 `json:"disruptionsAllowed" protobuf:"varint,3,opt,name=disruptionsAllowed"`